Population quality includes three basic aspects: body quality, science and culture quality and psychology quality.

人口素质包括人口的身体素质、科学文化素质和心理素质三个基本方面。

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Population quality includes three basic aspects: body quality, science and culture quality and psychology quality.

人口素质包括人口的身体素质、科学文化素质和心理素质三个基本方面。

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